Mass. Gen. Laws ch. 118E, § 69
(a) Reimbursements from the fund to hospitals and community health centers for health services provided to uninsured and underinsured individuals shall be subject to further rules and regulations promulgated by the office and shall be made in the following manner:—
(iv) the populations served; and (v) any other adjustments to the payment methodology under this section as considered necessary by the office, based upon circumstances of individual hospitals.
Following implementation of this section, the office shall ensure that the allowable reimbursement rates under this section for health services provided to uninsured individuals shall not thereafter be less than rates of payment for comparable services under the Medicare program, taking into account the adjustments required by this section.